![]() This is caused by some of the pins being used as JTAG pins and me having a 1.8V constraint. In the first case there is a voltage mismatch error. I don't think power consumption is the reason here.Īs Mitu Raj suggested I've checked the DIO PRC report and there were some issues when outputting to 196 pins, however no issues when outputting to only 128 pins. I did the power consumption calculation as suggested in the comments and the tool gives 37 mA current draw with all of the 196 pins running. Is there anything that may cause this kind of behavior? I understand that the "wider" the logic is bit-wise the more timing issues there may be, but the software doesn't report anything as being problematic, so I am not satisfied by this explanation. I assume there is something fundamental I don't understand about this FPGA, or maybe digital design as a whole, which why I am posting here. I have encountered the same behavior before, when I wanted to control many pins at once but I didn't find a solution back then. The testbench seems fine, the schematic view has the same topology as above, just with 128 bit wide registers, and the timing analysis gives 98 MHz as max frequency, which should still be enough. At 64 pins code works normally, however when I try to toggle 128 pins at once, everything seems fine in the software, but on the board the pins don't toggle at all. The issue arises when I increase the c_register_width, in other words when I want to toggle more pins. Signal s_output : STD_LOGIC_VECTOR(0 to c_register_width - 1) := (0 => '1', others => '0') įor j in 0 to c_register_width - 1 generateĪll in all the code, and the functionality is pretty simple, and when I upload the bit file to the device everything works as expected. Signal s_push_counter : NATURAL range 0 to 1 := 0 Signal s_counter : STD_LOGIC_VECTOR(7 downto 0) := (others => '1') Type t_pads is array(0 to c_register_width - 1)of STD_LOGIC I use the following code to toggle every pin: library IEEE Ĭonstant c_register_width : NATURAL := 32 The question however is not how to reverse engineer a board but a specific technical issue I am having with the FPGA which I would like to know the reason for, so please bear with me. (There are other ways to find the clock source, like desoldering the chip and trying to figure out the routing). My idea is to change the clock inputs (there are ~30 possible clock pins on this device) until I find the one where the pins start toggling. The practical reason I need this for is reverse engineering an unknown board, and first I need to find out which pin is connected to the clock source. I am writing a code to toggle every single pin (or most of them) on an FPGA. ![]() I am using Diamond Lattice software with the included Synplify synthesizer. If you’d like to learn more about what makes the Triple Stack different than some of their other adjustable pin options, keep an eye out for an in-depth review of the Triple Stack on our site in the near future.I am using a Lattice ECP5U FPGA (lfe5u-25f-6BG256). You have a better chance of getting your hands on one if you order a standard color and pin size. While it is customizable, this sight is extremely hard to come by. Similar to the rest of the MRT sight lineup, the Triple Stack also comes with all three MRT rings. 010″ or 0.019″ diameter as well as green, yellow and red colors. Your pins are brighter in low-light conditions as they are always gathering the most light possible. Unlike most sights which wrap the fiber around the housing, the fibers are wound repeatedly across the top. In addition to the individually micro-adjustable, vertical Bullet Proof pins, the Triple Stack features an all new “always up” solar wrap. Make sure you’ve correctly set up your sight tape. Sight in the three pins to your desired yardages, move the dial, and you’ll know the new yardages for all three pins. ![]() Unlike the Double Pin, the new Triple Stack gives you the ability to individually adjust each of the three pins and the corresponding individually adjustable pointers. The new sight was hard to get for much of the year due to the many challenges of the pandemic, as well as the incredible demand. While the Triple Stack sight was technically released in 2021, I’d be remiss in not mentioning them as a new product.
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